Congratulations on having an erection that is 80 to 90% of what you had prior to surgery. If you told me that in person I would high five you. There’s a lot of reason to hope that you’re going to have a full recovery of sexual function.
There are a number of us on the forum that have not had the same good fortune to have return of natural erections but we’re all rooting for you.
I can’t speak medically to your issue, but I can tell you that I had a similar experience initially. My first erection post surgery and before I started ADT was about 70 to 75% and I felt like a stallion. Unfortunately, I recall my first orgasm post surgery was almost nonexistent. I remember commenting to my wife when I first experienced that and we were both shocked, looked at each other and said “now what?”
From my own experience, nine months after surgery things have improved to the point where orgasms are worth the effort to achieve them. Prior to starting ADT some were absolutely mind blowing and left me breathless.
Even after being on both first and 2nd generation ADT for 6 months, I think they’re still worth the effort for me.
I recently completed eight weeks of pelvic floor therapy. My therapist who is a woman had access to my medical chart and saw that I am dealing with ED. She told me that it was her belief that levels would help me not only with urinary urgency, but would aid in the quality of erections and result and stronger orgasms. She was correct.
Good luck on your journey with prostate cancer. Never give up.
I suspect strengthening the pelvic floor is not just "kegels." @robertmizek or anyone else, do you have other exercises that help rebuild the muscles in this area? Does restrengthening the abdominal wall or whatever that is called also make a difference? I've been doing slow pushups, bridges, and leg lifts but I have received no coaching along these lines. I also had back pain which I suspected was due to a weaker "core." I'm not sure where to go to get advice on further muscle support and recovery. I did get a good start on pelvic floor thanks to a physical therapist around the time of RALP, but she was about 50 miles away and I didn't want to keep making the trek once I got some initial relief and continence.